Ralph W. Jackson

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The conditions necessary for the production of fumaric acid in 20-liter fermentors by fermentation of glucose with Rhizopus arrhizus strain NRRL 2582 were determined. Continuous neutralization of fumaric acid was necessary for optimal yields. Yields of the calcium salt were in excess of 65 g of fumaric acid from 100 g of sugar consumed during fermentation(More)
The sensitivity of Streptococcus faecalis (ATTC 8043) to S. zymogenes X-14 bacteriocin depends greatly on its physiological age. Sensitivity decreases from the mid-log phase on and is completely lost in the stationary phase. The sensitivity of erythrocytes to the hemolytic capacity of the bacteriocin showed considerable species variation. The order of(More)
PURPOSE To report the results of a multicenter experience with the Viatorr expanded polytetrafluoroethylene-covered stent-graft for transjugular intrahepatic portosystemic shunt (TIPS) creation in which patency and clinical outcome were evaluated. MATERIALS AND METHODS One hundred consecutive patients with portal hypertension, with a mean age of 52 years(More)
Choroid plexus carcinoma (CPC) is a rare tumour occurring in childhood. The MRI features are not well described. To characterise the MRI features of CPC in children and to describe the role of MRI in post-surgical management. The pre- and post-operative MRI examinations of five children with histologically proven CPC treated at this hospital were reviewed.(More)
Solublie teichoic acid could not stimulate the formation of antibodies either as an aqueous solution or in an emulsion with Freund incomplete adjuvant. However, when given as precipitates with methylated bovine serum albumin, it stimulated strong anti-teichoic acid responses. High levels of anti-teichoic acid antibodies usually resulted in allergic symptoms(More)
We report the percutaneous injection of tissue adhesive (Tisseal, Immuno, Vienna, Austria) to ablate a 12-cm internal iliac aneurysm. The complex history of this lesion included previous surgery for a ruptured aortic aneurysm, attempted repair of the internal iliac aneurysm, and several embolization procedures. These factors precluded further open repair or(More)
BACKGROUND Complications from gallstones and laparoscopic cholecystectomy can be serious and fatal if there is a delay in recognition and treatment. We aim to present two unusual, life threatening vascular complications as a result of gallstones and laparoscopic cholecystectomy. Their management is highlighted with a brief review of literature. METHODS(More)